sound waves and Doppler effect

the doppler effect results in

a change in a waves observed ( if sound wave perceived or pitched) frequency

no relative motion between source and observer and wave length is constant then

it is the actual frequency

sounds are classifed as

mechanical and longitudinal

the speed is constant if

medium is constant

natural frequency

nearly all objects vibrate when disturbed, and tend to vibrate at a natural frequency

doppler effect

occurs when there is a difference between the source of the wave's motion and the observers motion ex: firetruck moving with siren on

resonance

phenomenon where one object emitting a sound wave with a specific frequency causes another object with the same natural frequency to vibrate ex: high pitch causing glass to shatter height of building causes it to collapse in earthquake

Blue vs red

red shift- source/observer is moving away from source blue shift- source/ observer is moving towards source examples of light are radar gun that reflects frequencies to determine spped meterology radar for wind speed astronomy as evidence of the expanding world

doppler shift

shift in frequeny for sound, resulting in a change in pitch\shift in frequency for light results in a change in color, blue and red

what does the amplitude of a sound wave relate to

the loudness of sound (energy of the sound wave)

what does the frequency has to do with

the pitch, high frequency sound has a high pitch and low frequency sound has a low pitch

if the source/observer is moving toward each other than

the waves will bunch up and you will hear a higher frequency

if the source/ observer is moving away from each other

the waves will stretch out and you will hear a low frequency